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Abstract

Reflection polarizers and analyzers for the extreme uv spectral region are discussed. The conditions for optimum polarization are presented, and the polarization characteristics of a number of metal coatings, including gold and some of the platinum metals, are given. The performance of three- and four-mirror polarizers, using these metal coatings, is discussed. The properties required of a polarization analyzer are presented, and the performance of single and three- and four-reflection analyzers are discussed in terms of the optical properties of coating materials that might be useful for analyzers.

References

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Table II

Note: The headings of each column show the angle of incidence on all four mirrors. The maximum polarization values are outlined to show the angle of incidence for which they occur, and the corresponding throughput and angular limit values are also outlined.

Table III

Note: The headings of each column show the angle of incidence α on the first and third mirrors. The angle of incidence on the second mirror β is given by β = 2α − 90°. The maximum polarization values are outlined to show the value of α for which they occur, and the corresponding throughput and angular limit values are also outlined.

Tables (3)

Table I

Calculated Polarization (Rs/Rp)max, Throughput (Rs), and the Angle of Incidence at Which the Polarization Occurs for Au, Ir, Os, Rh, and Ru

λ(Å)

(Rs/Rp)max

Rs

Angle of incidence

Au

Ir

Os

Rh

Ru

Au

Ir

Os

Rh

Ru

Au

Ir

Os

Rh

Ru

300

7.36

13.6

32.8

16.5

18.1

14.0

9.19

4.79

6.45

6.80

45.7

38.0

40.1

40.7

39.5

400

4.99

2.57

3.21

4.23

3.61

23.3

36.6

27.2

21.7

24.3

48.5

42.0

36.7

42.0

37.8

500

4.09

2.41

2.28

3.16

2.59

28.8

48.9

47.0

34.5

41.8

49.2

51.6

48.1

47.8.

48.1

600

5.30

2.96

2.33

3.23

2.84

34.6

51.4

54.2

44.9

49.1

55.8

57.4

54.3

55.2

55.4

700

6.02

4.59

3.27

5.03

4.10

27.3

42.3

49.5

34.6

44.9

53.4

58.2

57.8

55.4

58.2

800

5.02

4.95

4.13

5.86

5.37

31.4

39.0

40.1

33.9

34.8

53.7

57.4

56.1

56.5

56.2

900

5.20

4.30

3.84

6.76

5.68

33.9

43.3

44.7

33.5

33.0

55.5

58.0

57.5

57.3

55.8

1000

5.91

4.03

4.23

7.47

6.11

35.7

49.7

48.6

31.9

29.5

57.4

60.2

60.2

57.2

54.7

1100

5.63

4.35

4.39

7.76

5.81

38.7

53.4

51.1

29.3

27.3

58.3

62.4

61.6

56.3

53.1

1200

5.51

4.89

4.45

7.67

3.84

41.9

52.6

51.4

26.2

35.6

59.5

62.9

61.8

54.8

52.7

1300

5.53

5.26

4.15

5.87

2.52

44.6

50.3

53.3

25.3

51.2

60.5

62.5

62.1

52.0

54.2

1400

5.60

5.17

3.58

3.84

2.05

46.9

49.7

57.9

34.2

64.2

61.5

62.2

62.7

51.7

57.6

1500

5.85

4.60

3.00

2.75

1.86

48.4

51.1

64.3

47.9

72.6

62.4

61.9

63.9

54.1

60.9

1600

6.30

3.74

2.61

2.28

1.81

49.0

56.0

70.9

59.1

77.3

63.0

62.3

65.5

56.8

63.4

1700

6.86

3.02

2.42

2.09

1.81

47.9

63.1

75.5

66.4

80.4

63.0

63.4

67.1

59.6

65.6

1800

6.34

2.62

2.35

1.99

1.84

48.1

69.5

78.6

71.5

82.3

62.7

64.9

68.4

61.6

67.2

1900

5.71

2.30

2.37

1.92

1.87

49.8

75.1

80.6

74.7

83.8

62.7

66.2

69.6

63.0

68.6

2000

5.28

2.13

2.38

1.87

1.91

52.8

78.4

82.0

77.4

84.6

64.0

67.1

70.5

64.2

69.5

Table II

Note: The headings of each column show the angle of incidence on all four mirrors. The maximum polarization values are outlined to show the angle of incidence for which they occur, and the corresponding throughput and angular limit values are also outlined.

Table III

Note: The headings of each column show the angle of incidence α on the first and third mirrors. The angle of incidence on the second mirror β is given by β = 2α − 90°. The maximum polarization values are outlined to show the value of α for which they occur, and the corresponding throughput and angular limit values are also outlined.